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PRICE | $6,999 USD | $8,999 USD | ||||||||
FRAME | Regulator SX Carbon 150mm | Regulator SX Carbon 150mm | ||||||||
WHEEL SIZE | Mixed | Mixed | ||||||||
DRIVE UNIT | Bosch Performance Line SX (BDU31) | Bosch Performance Line SX (BDU31) | ||||||||
BATTERY | Bosch CompactTube (400wh) | Bosch CompactTube (400wh) | ||||||||
DISPLAY | Bosch System Controller | Bosch System Controller | ||||||||
ASSIST SWITCH | Bosch Wireless Mini Remote | Bosch Wireless Mini Remote | ||||||||
REAR SHOCK | RockShox SuperDeluxe Select (205x60mm) |
RockShox SuperDeluxe Ultimate (205x60mm) |
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FORK | RockShox Lyrik Base (160mm) |
RockShox Lyrik Ultimate (160mm) |
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HEADSET | FSA No.57E | FSA No.57E | ||||||||
STEM | RaceFace Aefect R (40mm) | ANVL Swage (40mm) | ||||||||
HANDLEBAR | RaceFace Chester 35 SM (780x20) MD/LG/XL (780x35) |
OneUp Carbon SM (800x20) MD/LG/XL (800x35) |
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GRIPS | ODI Elite Flow Lock-On | ODI Elite Flow Lock-On | ||||||||
SADDLE | SDG Bel Air 3 | SDG Bel Air 3 LUX | ||||||||
SEATPOST | SDG Tellis SM (150mm) MD (170mm) LG (200mm) XL (230mm) |
OneUp Dropper Post SM (150mm) MD (180mm) LG (210mm) XL (240mm) |
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BRAKES | Shimano Deore M6120 4 Piston | TRP EVO PRO | ||||||||
ROTORS | Shimano RT66 (203mm) | TRP R1 2.3 (203mm) | ||||||||
SHIFTER | Shimano Deore M6100 iSpec EV | Shimano XT M8100 | ||||||||
DERAILLEUR | Shimano Deore M6100 SGS 12sp | Shimano XT M8100 SGS 12sp | ||||||||
CASSETTE | Shimano Deore M6100 (10-51t) | Shimano XT M8100 (10-51t) | ||||||||
CHAIN | Shimano Deore M6100 | Shimano XT M8100 | ||||||||
CRANK | RaceFace Aeffect R E-MTB (160mm) | RaceFace ERA Carbon E-MTB (160mm) | ||||||||
CHAINRING | E*Thirteen Helix Race Direct Mount (32t) | E*Thirteen Helix Race Direct Mount (32t) | ||||||||
CHAINGUIDE | Transition Integrated Top Guide | Transition Integrated Top Guide | ||||||||
RIMS | WTB ST i30 | DT Swiss XM 481 | ||||||||
SPOKES | Pillar Double Butted | DT Swiss Competition | ||||||||
HUBS | Novatech D791SB/D902SB | DT Swiss 350 Classic DEG | ||||||||
TIRE/FRONT | Maxxis Assegai 3C EXO/TR (2.5) | Maxxis Assegai 3C EXO+ (2.5) | ||||||||
TIRE/REAR | Maxxis Minion DHRII 3C EXO/TR (2.4) | Maxxis Minion DHRII 3C EXO+ (2.4) | ||||||||
INCLUDED | Bosch Charger Tubeless Valves & Sealant |
Bosch Charger Tubeless Valves & Sealant |
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COLOR OPTIONS |
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WEIGHT | TBD | 41.16 lbs / 18.67 kg (Size MD) | ||||||||
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Specs are subject to change at any time. All complete bikes are 95% assembled and packaged for quick and easy final assembly, and as such, Transition Bikes is not able to make special request build spec changes or modifications to packaging. |
The dedicated mixed-wheel platform with 150mm rear and 160mm front travel make the Regulator SX nimble and responsive, blurring the lines between our powered and non-powered bikes with complete builds starting at just over 41lbs. With a 64.5 degree headtube angle and short, 27.5" wheel specific chainstays, we were able to make the Regulator one of the most maneuverable eMTBs we've ever ridden. This keeps the ride fun and engaging on everything from smooth flow trails to steep tech.
The Bosch SX system delivers the highest power-to-weight ratio possible. Perfect for riders who want the lightest ride characteristic from their eMTB and have it excel in a wide variety of terrain, from smooth singletrack to rocks and roots. The Bosch SX system is one of the lightest on the market, while still providing a high peak power of 600 watts. Complete builds come in at just over 41lbs, giving you a ride feel nearly matched to that of our non-powered bikes.
Powered by the Bosch Performance Line SX system, the Regulator gets the legendary reliability of Bosch in a lightweight package giving you 55nm of torque and 600w peak power. While powerful, the system also provides an incredibly natural feel that delivers power without breaking traction, keeping your momentum and helping you clear technical trails.
Enclosed low in the downtube is Bosch's 400wh battery. Perfect for local laps where you want the most maneuverable eMTB in the market.
Head into the backcountry with the additional 250wh range extender. Custom cable management keeps the connection clean and secure.
Easily control the power modes and view battery life via the wireless Mini Remote and slim System Controller top tube display. This minimal display keeps you focused on the trail ahead, while providing all the necessary info you need to keep riding. Giving you everything you need, and nothing you don't.
For those looking to dig into the settings, the Bosch Flow app gives you full control and customization. Once paired with your Regulator, you can adjust the power level support and peak power from the convenience of your phone without any wires or a laptop.
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![]() ![]() GIDDYUP SUSPENSION DESIGN ![]() We want to make it as easy as possible to experience great rear suspension performance. The GiddyUp suspension system is designed to behave intuitively across a broad range of setup. Because, we get it, sometimes you just want to grab your bike and GiddyUp, without checking your setup. ![]() This translates to supple small bump compliance and great mid-stroke support that gradually transitions into a subtle, yet supportive end-of-stroke ramp. The amount of consistent progression is carefully optimized for both air and coil shocks. Riders are able to add or remove volume spacers in air shocks to suit their individual riding style. The Regulator has 150mm of rear wheel travel when used with the supplied 205mm x 60mm stroke shock. It is also possible to install a longer stroke shock of 205mm x 65mm to increase the rear wheel travel to 160mm. A wide usable sag range of 27-33% allows the rider to tune the feel of the bike; from poppy and playful, to planted for plowing. Wherever you end up, you can focus on the trail without remotes, levers or knobs. Just grab your bike and GiddyUp. | ![]() |
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REAR TRAVEL: | 150mm (Compatible with 160mm) | ||
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FRONT TRAVEL: | 160mm | ||
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WHEEL SIZE: | 29" Front / 27.5" Rear | ||
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SIZES: | SM, MD, LG, XL | ||
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FRAME BEARINGS: | 2x 6903, 2x 6902, 6x 6802, 2x 6900 | ||
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FORK AXLE TO CROWN: | 579mm | ||
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FORK OFFSET: | 44mm | ||
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REAR SHOCK SIZE: | 205mm x 60mm (compatible with 205 x 65mm) | ||
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SHOCK HARDWARE: | Trunnion Mount Top / 30mm x 8mm Bottom | ||
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HEADSET (TOP): | 44mm Zero Stack | ||
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HEADSET (BOTTOM): | 56mm Zero Stack | ||
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BB SHELL: | 73mm BSA Threaded | ||
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CHAINLINE: | 55mm | ||
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REAR BRAKE MOUNT: | 180mm Post Mount, Max Rotor Size 223mm | ||
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REAR AXLE: | Transition Axle For UDH, 12mm x 148mm Spacing | ||
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ISCG TABS: | ISCG05 | ||
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SEATPOST DIAMETER: | 31.6mm | ||
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SEAT CLAMP: | Carbon: 37.0mm | ![]() |
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MAX SEATPOST INSERTION: | Small 235mm | Medium 260mm | Large 300mm | X-Large 330mm | ||
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MAX CHAINRING SIZE: | 34T Standard Single Ring | ||
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MAX TIRE SIZE: | 27.5” x 2.6" (*see FAQ) | ||
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REAR SHOCK SAG: | 150mm/60mm: 16-20mm (26-32%) |